Type-writing machine.



PATENTED AUG. 25, 1903.

R. D. STAGKPOLE. TYPE WRITING MACHINE. urmcmron FILED nun. 20.1903.

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UNITED I STATES Patented August 25, 1903.

PATENT OFFICE.

I RALPH DOW STAO'KPOLE, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR, .BY MESNEASSIGNMENTS, TO ELLIOTT-FISHER COMPANY, A CORPORATION OF DELAWARE.

ITYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 737,168, dated August25, 1903.

Application filed March 20, 1903- Serial No. 148,779. (No model.)

To aZZ whom it may concern:

Be it known that I, RALPH DowSrAoK- POLE, of Harrisburg, county ofDauphin,-and State of Pennsylvania, have invented a new and usefulImprovement in Type-Writing Machines, of which the following is a specification/ This invention has reference to that class of type-writingmachines in which a carbon sheet or web and an underlying web of paperare extended over a flat platen beneath a downwardly-acting writingmechanism for the purpose of making a copy of the writing efiected on anupper sheet of paper. In this class of machines it is a common practiceto extend the carbon web and the paper web over the platen from rolls atthe rear and to confine them at the forward end by a transverse clamp,so that the portion of the sheet onwhich the copy appears may be drawnforward under the clamp and drawn or severed from the main portion ofthe web. In practice it is found that when the clamp is released toadmit of the end of the sheet being grasped preparatory to pulling itforward the fingers of the operator are liable to come in contact withand be soiled by the carbonsheet.

My improvement has reference especially to the clamping device. The endin view is to release and raise the end of the paper and at the sametime separate it from the carbon, so that it may be conveniently graspedand pulled forward without endangering the hand.

In the drawings I have shown my device applied to a machine of thecharacter shown in Letters Patent of the United States, No. 620,125. I

1 With the exception of the clamping device the machine may be in allrespects of ordinary construction.

Referring to the drawings, Figure 1 is a longitudinal vertical sectionthrough a machine provided with my. improvement as viewed in thedirection of the arrows on the line 1 1 of Fig. 4.. Fig. 2 is asimilarsection through the forward endof the platen and the clamp thereon asviewed in the direcwith the sheets confined in place. Fig. 3 is asimilarsection showing the clamp in its raised position with the sheetsreleased and tion of the arrows on the line 2 2 of Fig. 4

separated. Fig. 4 is a top plan view of the forward end of themachineand the clamp. Referring to the drawings, A represents theplaten, B an open frame arranged to slide paper and a roll of carbonmounted in suit-- able supports u nder the rear end of the platen. Theendsof the carbon sheets or webs are extended lengthwise over thesurface of the platen to the forward end, where they are passed beneathand held by the transverse clamping-bar F, which is drawn downward atits ends by rods f, extending down through holes in theframe andencircled at the lower end by springs f. The clamping-bar is provided,as usual, with rearwardly-extending legs f and with a handle f by whichit may be turned upward. When thus raised, the bar will be supportedonthe legs f clear of the platen, so that the sheets maybe drawn endwisewithout resistance. Heretofore the clamping-bar has been made in onesolid piece, and the paper and carbon sheets have laid one directly uponthe other under the clamp. I- now recess the clamp longitudinally onthe'under side and attach thereto at the ends a longitudinal bar orstrip f leaving'a thin space between the upper surface of'thisbar andthe under side of the clamp proper.

The paper sheet is extended beneath the clamp and its bar f while theend of the carbon-sheet is passed through the slit or' opening over thebar f -When, therefore, the clamp is turned. upward to release thesheets, as shown in Fig.3, it will lift the end of the carbon-sheet away"from the paper, which is separately exposed, so that the paper may bereadily seized by the operator. It is immaterial whether. the bar fbears upon the paper sheet or not, since the pressure ap' plied to thecarbon-sheet will also serve to hold the underlying paper in place.

Obviously the details of the device may be widely modified. The onlyessential requirement is that the clamp shall separate the paper andcarbon sheets when they are relieved from pressure.

It will be observed that the upper roll at one endof the platen and theclamp at the other serve as means for guiding and holding the paper weband the carbon web.

Having thus described myinvention, what I claim is 1. In atype-writingmachine,a clamping de* vice, constructed substantially as described, toconfine a paper sheet and a carbon-sheet overlying the same, and.adaptedto separate the sheets one from the other when they are released,whereby the operator is enabled to grasp the paper sheet independentlyof the carbon-sheet.

2. In a type-writing machine, a clampingbar adapted to confine twosheets, one overlying the other, and provided with means for separatingsaid sheets as they are released,

bined with the underlying bar or strip f Q adapted to separate twosheets, one overlying the other.

4. In a type-writing machine, the combination of the flat bed or platen,a spring-actuated clamp F, adapted to bear at its outer edge on theunderlying sheets, and provided with a bar or strip f to separate thesheets.

5. In a type-writing machine,'means for guiding and holding a paper Weband a carbon-web, and means for separating the ends of the two webs whenthey are released, whereby the operator is enabled to grasp the paperindependently of the carbon.

In testimony whereof I hereunto set my hand, this 5th day of March,1903, in the presence of two attesting witnesses.

RALPH DOW STACKPOLE.

Witnesses:

WM. 0. ARMOR, MARY E. IIAUER.

